Wood wool covering



1933- H. SCHNEIDER ET-AL 1,923,643

WOOD WOOL COVERING Filed Aug. 2, 1928 Patented Aug. 22, 1933 uurrso woonWOOL COVERING Application August 2, 1928, Serial No. 297,036, and inGermany August 10, 1927 3 Claims.

Wood wool and other loose short-filamentous materials have been used forpacking for a long time as well as wood, straw and otherlong-filamentous materials. Up to now solid coverings 5 were made onlyof straw and the like long-filamentous materials, but not ofshort-filamentous materials. They were made e. g. by winding them up onround cylinders, sewing them up whilst another cylinder-like vesselsurrounded the first 1 mentioned cylinder parallel to it.

The object or" the present invention is a process and a device for themanufacture of coverings or wrappers of any short-filamentous, loosematerial, especially of wood wool. Furthermore the present inventionshows an apparatus especially adapted for carrying out the process ofthe present invention. According to the invention a rotating metallicwinding case is used to wind up the wood wool, the aforesaid metallicwinding case being enclosed in another one that isfixed. The shape ofthe two cases is a round preferably circular one. The material to beused e. g. wood wool may be introduced between the two cases in anysuitable manner. The best way to supply the material by means of slitsbeing provided in the exterior case. The raw material is introducedthrough these slits while the interior metal case is rotating and iswrapped up round the said interior case in the shape of the latter.Furthermetal case means to pull up the raw material, preferablydetachable catch pins.

Finally it has been established that the use of any of the well-knownmethods of sewing bottlecoverings advantageously may be used inconnection with the present invention. The most practical way for thispurpose is to provide the interior case with several longitudinal orcross slits,

through which the chips or threads of the wood to wool on the case canbe sewed up with each other.

In the subjoined drawing the invention is represented by way of example.

Fig. 1 shows a longitudinal section of the new device,

Fig. 2 a cross section of the same.

A case (1) that have a cylindrical cross section is fitted on a windingframe with an'ordinary spindle and a sliding rod, which frame is notrepresented in the drawing. The said metal case is turning in bearings(2), which are connected with the exterior case (3). This outer case (3)is fixed, so that the interior case (1) is revolving inside the same,viz at a rate of about 50 to rotations a minute. The outer metal case(3) is fixed to a slit (4) at a stationary slit more it is of advantageto provide on the interior (Cl, Ellie-54) connection. The interior case(1) has three longitudinal (5) in the form of embodiment given in Fig. 2of the drawing. The exterior metal case (3) has likewise threelongitudinal slits ('6) lying above the longitudinal slits (5). Of 60these exterior slits, the upper one, through which the wood wool is fedby hand, is larger. Inside the interior case (1) a ledge ('7) isarranged, to which are fitted catch pins (8) that pass through the wallof the interior case (1) in the respective 7 holes.

The ledge ('7) is pressed by a spring (9) against the inner Wall or" themetal case (1), while it can be drawn out or" the said metal case (1) bymeans of rings (10) placed at its ends, after the catch pins have beenlifted out of the holes of the metal case (1) counter to'the pressure ofthe springie). As soon as the required strength of theprotectivecovering tobe manufactured has 36611 obtained by the repeated rotationof the 7 interior case, both the metal cases are placed above a sewingmachine, where the covering arranged betweenthe two metal cases is sewedin such a manner that the sewing-needle, together with the seam, willlie at the slits (5 and 6). The outer metal case is only removed afterthe wood" wool has been sewed up, whereupon the finished covering isremoved from the inner case. The case may be of any suitable materialadvantageously of metal.

By the process explained above and the devices described a protectivecovering, especially of wood wool, is produced that may be applied tovarious purposes. It will proveparticularly advantageous and practicalwhen forwarding by mail glasses or bottles filled with chemical liquidsin consignments or shipments with which the of straw, cardboard,pasteboard and the like is proh bited by law in conformity with home orforeign regulations. The novel covering can be given any form, accordingto the object which it has to cover or protect. It may be manufacturedin a cylindrical, conical, oval or bottle-like shape, and will adopt anyother form which the metal case must have in accordance with the objectin question.

We claim:

1. As a new article or manufacture, a protective covering consisting ofloose, short intertangled filaments compactly arranged and mattedtogether to form a web and a row of binding stitches extending acrosssaid intertangled filaments and said web and holding the filaments inplace.

2. Asa new article of manufacture, a protectthe web is endless so thatit forms a continuous fabric which may be opened to receive an articleto be covered and protected thereby and in which there are a pluralityof the binding lines of stitches spaced apart.

HEINRICH SCHNEIDER. KARL SCHNEIDER.

